Abrading-machine.



W. SANDER.

ABRADING MACHINE.

APPLICATION men APR. 14, 1914.

Patented. Sept 25, 1917.

MW. f.

ABRADINGr-MAGHINE.

Specification. of Letters Patent.

Application fil ed April 14, 1914. Serial No. 831,770. I

To all whom itmay concern.-

Be it known that I, VVILHELM SANDER, a citizen of the Swiss Empire, and a resident of Zurich, Switzerland, have invented certain new and useful Improvements in Abrading-Machines, of which the following is a specification.

This invention relates to abrading ma?- per minute in order to produce effective results, especially so in the sharpening of knife blades and other implements having cutting edges.

A further object of this invention is to provide a reciprocating member and novel means for reciprocating the said member, whereby the said member is prevented from undue vibration or vertical movement which might tend to displace the apparatus or machine and cause the shifting of its position with respect to its support, when operating rapidly as above stated. 7

With the foregoing and other objects in view, the invention consists in the details of construction and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed. I

In describing the invention in detail, reference will be had to the accompanying drawings forming part of this specification wherein like characters denote corresponding parts in the several views, and in which Figure 1 illustrates a view in elevation of a machine embodying the invention;

Fig. 2 illustrates a top plan view thereof a portion thereof being broken away.

In these drawings 4 denotes a base, one end of which is provided with bearings such as 5 in which a shaft 6 is rotatably mounted; the shaft being here shown as having pulleys 7 and 8, one of which is an idler and the other of which is designed to receive or be engaged by a driven belt 9 operated from any suitable source of power.

The base 4 is provided with a supplemental frame 10, the upright portions of which have heads 11, grooved to form ways 12 in which the arms 13 are slidable, said arms projecting from or forming part of a clamp 14 designed to hold the abrading material 15. The clamp maybe of any appro- Upriateconstruction, type or configuration effective for the purpose of retaining therein some form of abrading material and as the particular construction of the clamp or the abrading material may be varied to suit particular requirements, the construction here shown will not be described in detail. The arms 13 are of such length as to afford movement of the clamp for the abrading material between the standards 10, the degree of movement varying in different machines according to the offset of the reciprocating means from the shaft 6.

One end of one of the arms 13 has a pitman 16 pivotally connected to it and the opposite end of said pitman is pivoted to an ear 17 forming a part of or extending from the rocking lever 18. The lower end of the lever 18 is pivotally connected to a bracket 19 and the upper end thereof is bifurcated to form guides 20 between which guides, a bearing 21 is slidable, the said bearing having a wrist pin 22 therein which wrist pin projects from the surface of a pulley 23, which pulley is mounted on the shaft 6 and is rotated therewith.

The upper end of the lever has a bolt 24 extending across the space between the bifurcated sections forming a guard and serving as an adjustment of the guides with relation to the cross head. The heads 11 of the standards have apertured lugs 25 and the said standards and lugs form supports for retaining plates 26 which are secured to the lugs 25 by means of fastenings 27 which may be in the form of screws 01 other ap propriate devices.

The standards 10 have oil ducts therein leading to the grooves or ways in which the arms slide, the said oil ducts being supplied with oil cups 28 by which lubricant may be forced against the arms so that said lubricant will be distributed to prevent undue friction.

The standards 10 have brackets 29 extending laterally therefrom and the said brackets are caused to hold a work support 30 here shown as in the nature of a rod extending between and through the bosses 31 on the ends of the said brackets. By reason of the construction just indicated, it will be ap- Patented se t. 25, 1917.

parent that the Work to be operated upon by the abrading material may-he manually held and the support 30 Will aid the operator in maintaining the Work in proper relation to the abrading element. lelaimf' -f y In an abrading machine, a base, standards supported by the base, bearingsv supported by the standards, and abrading clamp for abrading material having arms slidable in said bearings, one of said arms extending be 0nd oneof the standards, v an operating p.11 ley, lever pivotaIIy connected to the base, one end of said lever being bifurcated to fol-m guide-s, means for providing a connection between the bearing and pulley, means connecting the lever to the extending arm of the clamp, whereby movement of the lever is transmitted to the clamp, and abrading means supported by the clamp.

In testimony whereof, I affix my signature in the presence of tWo Witnesses. v

WVILHELM SANDER. Witnesses:

FRANCESCO BAcoi-n, CARL GUBLER.

Copies of this patent may be obtained fqr fivecents each, byaddressing the flunlmissionef of Patents;

' I Washington, I). G. 

